I forgot to say that the wedding dress toiles had boning sewn into the lining (I used Rigilene for #1 and Spiral steel for #2 and preferred the latter) so I thought I should try to add a foundation layer, i.e. a corselette to add additional support.
Also after trying on toile #2, I realised that I didn't like the neckline...a bit late I know! I wanted more of a sweetheart neckline so I decided to steal the bodice from Simplicity 4070 (which is what I will be using to make my bridesmaid dress)
So I have this:
See below for experiments with lace and then some shimmery organdi (which is what I happened to have to hand). Whilst I like how soft the sheer fabric ruching looks, I'm not sure how practical it will be, especially as I probably won't include the tie at the back with the lace-up...
I will also need to add more boning to the corselette - currently there're 6, all in the seams, but I am aiming for 10+...More supplies to be ordered!